About Tos Packet Priority - McAfee SG310 Administration Manual

Network Setup menu options
Traffic Shaping
Disabling QoS Autoshaper
From the Network Setup menu, click QoS Traffic Shaping. The QoS Autoshaper page appears.
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Click the edit icon next to the network interface on which you want to disable the autoshaper. The QoS
2
Autoshaper edit page appears.
Clear the Enable checkbox.
3
Click Finish.
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About ToS packet priority

The ToS (Type of Service) packet prioritization feature provides a finer level of control over the relative
performance of various types of IP traffic. You can allocate high, medium, or low priority to the following
services:
• domain (tcp and udp)
• ftp and ftp-data
• http and https
• imap
• irc
• nntp
• ntp
• pop3
• smtp
• ssh
• telnet
Enabling and configuring ToS packet priorities
You can configure the ToS packet priorities for services. When the UTM Firewall appliance has multiple
packets queued for transmission, it transmits the higher priority packets first. This priority is set in the ToS
field in the IP packet header. The appliance is able to change the ToS field of some traffic types in order to
increase their priority. Packets can also be matched by their source or destination IP address.
Tip: ToS traffic shaping works best when used in conjunction with the QoS autoshaper. Enable and configure the
QoS autoshaper if possible when using ToS packet prioritization. See
McAfee UTM Firewall 4.0.4 Administration Guide
Enabling QoS Autoshaper.
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